One-pot synthesis of highly ordered nitrogen-containing mesoporous carbon with resorcinol–urea–formaldehyde resin for CO2 capture
One-pot synthesis of highly ordered nitrogen-containing mesoporous carbon with resorcinol–urea–formaldehyde resin for CO2 capture
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DOI：
10.1016/j.carbon.2013.12.058
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发表时间：
2014-04
期刊：
影响因子：
10.9
通讯作者：
Juhyon Yu;Mingyi Guo;Faheem Muhammad;Aifei Wang;Feng Zhang;Qin Li;G. Zhu
中科院分区：
文献类型：
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作者：
Juhyon Yu;Mingyi Guo;Faheem Muhammad;Aifei Wang;Feng Zhang;Qin Li;G. Zhu
采用软模板法制备了含氮有序介孔碳，而无需采用复杂的预聚合和水热固化步骤。该策略包括使用六亚甲基四胺，一种用于间苯二酚-脲醛树脂自组装的甲醛缓释源，介导富氮碳有机前体的形成，而亲大三嵌段共聚物（Pluronic F127）被用作模板。小角度x射线衍射、透射电镜、氮气吸附等实验表明，所制得的介孔碳具有以体心为中心的立方i3m形式，具有较高的比表面积。x射线光电子能谱分析表明，氮以吡啶、吡啶/吡啶、季氮和氧化氮的形式存在。氮基团的存在显著提高了介孔碳（0°C时3.3 mmol g−1,25°C时2.6 mmol g−1）和活性炭（0°C时4.9 mmol g−1,25°C时3.1 mmol g−1）在0.95 bar时的co2吸附能力。这一特性证明了n掺杂介孔碳是一种很有前途的高性能co2捕获吸附剂。
Nitrogen-containing ordered mesoporous carbon has been prepared by a soft-templating strategy, without using intricate prepolymerization and hydrothermal solidification steps. This strategy involves the use of hexamethylenetetramine, slow releasing source of formaldehyde for the self-assembly of resorcinol–urea–formaldehyde resin, to mediate the formation of nitrogen enriched carbon organic precursor, whereas ampliphilic triblock copolymer (Pluronic F127) was used as a template. Small angle X-ray diffraction, transmission electron microcopy, nitrogen sorption demonstrated that the obtained mesoporous carbon possessed a body-centered cubic Im 3‾ m structure with a high surface area. X-ray photoelectron spectroscopy revealed that the incorporated nitrogen was present in the form of pyridine, pyrrolyic/pyridine, quaternary and oxidized nitrogen. The presence of nitrogen groups in the resulting material significantly improved the CO 2 adsorption capacity for mesoporous carbon (3.3 mmol g− 1 at 0° C, 2.6 mmol g− 1 at 25° C) and activated mesocarbon (4.9 mmol g− 1 at 0° C, 3.1 mmol g− 1 at 25° C) at 0.95 bar. This feature substantiates N-doped mesoporous carbon as a promising high-performance CO 2 capture sorbent.